Adding min_sdk_version to libgrpc_bindgen am: ead5592d57 am: f4b2eb0972 am: 2c81e863bf am: 9d6e46996f

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/grpcio-sys/+/1966312

Change-Id: I55b2031b43527f31acff1496439f24d44903e6f5